干旱区生态环境知识资源中心(Arid): Changes in Organic Carbon Index of Grey Desert Soil in Northwest China After Long-Term Fertilization

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	Changes in Organic Carbon Index of Grey Desert Soil in Northwest China After Long-Term Fertilization
	Xu Yongmei; Liu Hua; Wang Xihe; Xu Minggang; Zhang Wenju; Jiang Guiying
来源期刊	Journal of Integrative Agriculture
ISSN	2095-3119
出版年	2014
卷号	13 期号:3 页码:554-561
英文摘要	Soil organic carbon (SOC), soil microbial biomass carbon (SMBC) and SMBC quotient (SMBC/SOC, qSMBC) are key indexes of soil biological fertility because of the relationship to soil nutrition supply capacity. Yet it remains unknown how these three indexes change, which limits our understanding about how soil respond to different fertilization practices. Based on a 22-yr (1990-2011) long-term fertilization experiment in northwest China, we investigated the dynamics of SMBC and qSMBC during the growing period of winter wheat, the relationships between the SMBC, qSMBC, soil organic carbon (SOC) concentrations, the carbon input and grain yield of wheat as well. Fertilization treatments were 1) nonfertilization (control);2) chemical nitrogen plus phosphate plus potassium (NPK);3) NPK plus animal manure (NPKM);4) double NPKM (hNPKM) and 5) NPK plus straw (NPKS). Results showed that the SMBC and qSMBC were signiifcantly different among returning, jointing, lfowering and harvest stages of wheat under long-term fertilization. And the largest values were observed in the lfowering stage. Values for SMBC and qSMBC ranged from 37.5 to 106.0 mg kg~(-1) and 0.41 to 0.61%, respectively. The mean value rank of SMBC during the whole growing period of wheat was hNPKM>NPKM>NPKS>CK>NPK. But there were no statistically signiifcant differences between hNPKM and NPKM, or between CK and NPK. The order for qSMBC was NPKS>NPKM>CK>hNPKM>NPK. These results indicated that NPKS signiifcantly increased the ratio of SMBC to SOC, i.e., qSMBC, compared with NPK fertilizer or other two NPKM fertilizations. Signiifcant linear relationships were observed between the annual carbon input and SOC (P<0.01) or SMBC (P<0.05), and between the relative grain yield of wheat and the SOC content as well (P<0.05). But the qSMBC was not correlated with the annual carbon input. It is thus obvious that the combination of manure, straw with mineral fertilizer may be beneift to increase SOC and improve soil quality than using only mineral fertilizer.
英文关键词	carbon input Haplic Calcisol long-term fertilization Quotient of soil microbial biomass carbon soil organic carbon index
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:5097625
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335334
作者单位	Xu Yongmei, Key Laboratory of Oasis Nutrients and Efifcient Utilization of Water and Soil Resources,Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Liu Hua, Research Institute of Soil & Fertilizer and Agricultural Water Conservation,Xingjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China.; Wang Xihe, Research Institute of Soil & Fertilizer and Agricultural Water Conservation,Xingjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China.; Xu Minggang, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Zhang Wenju, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Jiang Guiying, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
推荐引用方式 GB/T 7714	Xu Yongmei,Liu Hua,Wang Xihe,et al. Changes in Organic Carbon Index of Grey Desert Soil in Northwest China After Long-Term Fertilization[J],2014,13(3):554-561.
APA	Xu Yongmei,Liu Hua,Wang Xihe,Xu Minggang,Zhang Wenju,&Jiang Guiying.(2014).Changes in Organic Carbon Index of Grey Desert Soil in Northwest China After Long-Term Fertilization.Journal of Integrative Agriculture,13(3),554-561.
MLA	Xu Yongmei,et al."Changes in Organic Carbon Index of Grey Desert Soil in Northwest China After Long-Term Fertilization".Journal of Integrative Agriculture 13.3(2014):554-561.